WTT Custom gaming computer for amp

I have a Custom built Intel i5 750 @ 2.67 GHZ. Running 4 GB of DDR3 ram, 250 GB 7200 RPM Barracuda Hard Drive, a Blue Ray player and a 1 GB Evga Geforce GTX 550 ti. The video card is MINI HDMI and DVI Capable(MINI HDMI INCLUDED). The PC is powered by a true 550w power supply. Surrounding the internals is a massive Cooler Master HAF 922 Mid Tower. The case has three 200x30 fans, the front one covered in red LED. The fans make zero noise. The computer can run any game at the highest graphic settings(Skyrim, GTA 4, etc) with no lag. The computer has a non authentic copy of Windows 7 ultimate (works just like the genuine version). Also comes with extra 250 GB hard drive and sata cables.

Windows experience Index RATING 5.9 out of 7.9

Processor: 7.3

Memory(RAM): 7.5

Graphics:7.4

Gaming Graphics:7.4

Hard Drive:5.9

I would really like to get an AQ2200d or higher, Sundown Saz-2500 or higher. Or any amp of high quality with the rms power of the two i just mentioned